Alternating current motor for drainage pump

Abstract

The utility model discloses an alternating current motor for a draining pump, which comprises a casing, a front end cover and a rear end cover, and the front end cover and the rear end cover are respectively arranged at two ends of the casing. A pipeline assembly is arranged in the machine shell, cooling water flows in the pipeline assembly, the pipeline assembly comprises annular pipes, a water inlet pipe, a water drainage pipe and a flow guide pipe, the annular pipes are fixed to the inner wall of the machine shell, the flow guide pipe is arranged between every two adjacent annular pipes, the water inlet pipe is communicated with one annular pipe, the water drainage pipe is communicated with one annular pipe, and the water inlet pipe and the water drainage pipe both penetrate out of the machine shell. The cooling device is novel in structure, adopts a water cooling mode, effectively reduces the internal temperature, and prevents the motor from being overheated to influence the normal operation of the motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to an AC motor for a drainage pump. Background Art

[0002] A drainage pump is a device used to transport liquids and is typically driven by an AC motor. AC motors generate a significant amount of heat during operation. Without proper cooling, the motor's internal components can burn out due to excessive heat, seriously shortening its service life.

[0003] Existing AC motors mainly rely on the installation of fans and their own heat dissipation holes to dissipate heat. When the installation environment temperature is high or the ventilation is poor, the heat dissipation effect is not ideal, the temperature drops slowly, and the applicability is limited.

[0004] The existing patent document (publication number: CN219697412U) discloses "a new type of water pump motor", which also has the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art and to provide an AC motor for a drainage pump. The motor has a novel structure and adopts a water cooling method to effectively reduce the internal temperature and avoid overheating of the motor and affecting its normal operation.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An AC motor for a drainage pump comprises a housing, a front cover, and a rear cover, each of which is located at either end of the housing. The motor is characterized by a piping assembly within the housing, through which cooling water flows. The piping assembly comprises a ring pipe, a water inlet pipe, a drain pipe, and a flow guide pipe. The ring pipes are fixed to the inner wall of the housing, and the flow guide pipe is located between two adjacent ring pipes. The water inlet pipe communicates with one ring pipe, and the drain pipe communicates with another ring pipe. Both the water inlet pipe and the drain pipe extend beyond the housing. This AC motor has a novel structure and utilizes water cooling to effectively reduce its internal temperature, preventing overheating that could affect normal operation.

[0008] Furthermore, L-shaped pressing blocks are distributed circumferentially on the inner wall of the casing. The L-shaped pressing blocks press the annular pipe against the inner wall of the casing, restricting the free movement of the pipeline assembly, thereby improving the installation stability of the pipeline assembly, and being simple and reliable.

[0009] Furthermore, the L-shaped pressing block is provided with a mounting portion, which is connected and fixed to the casing by screws. The fixing is reliable, the assembly and disassembly is convenient, and the device can be used at any time after assembly, which is flexible and convenient.

[0010] Furthermore, a fixing screw is provided between the front cover and the rear cover, with nuts attached to both ends of the fixing screw. The nuts at both ends prevent the front cover and the rear cover from freely separating from the housing, thereby making the housing, the front cover and the rear cover detachable, facilitating maintenance of the motor components and piping components inside the housing and improving convenience.

[0011] Furthermore, positioning protrusions are provided on the front end cover and the rear end cover, and positioning recesses corresponding to the positioning protrusions are provided at both ends of the casing, so that the front end cover, the rear end cover and the casing can be quickly connected, reducing the difficulty of assembly. After the fixing screws and nuts are installed, there will be no relative rotation between the front end cover and the casing, and between the rear end cover and the casing, thereby ensuring the overall assembly stability.

[0012] Furthermore, heat dissipation slots are evenly distributed on the casing, which increases the area for air circulation inside and outside the casing. The radial air circulation effectively takes away the heat inside the casing, thereby improving the heat dissipation efficiency.

[0013] Furthermore, first heat dissipation holes are evenly distributed on the front cover, which increases the area for internal and external air circulation, effectively takes away the heat inside the casing, and improves the heat dissipation efficiency.

[0014] Furthermore, second heat dissipation holes are evenly distributed on the rear end cover, which increases the area for internal and external air circulation, effectively takes away the heat inside the casing, and improves the heat dissipation efficiency.

[0015] Furthermore, fixed brackets are symmetrically distributed on the bottom of the casing, which provide overall support and are stable and reliable; mounting holes are provided on the fixed brackets, and screws are driven into the mounting holes to fix the entire casing to the bottom plate or bottom bracket, thereby improving the convenience of installation.

[0016] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0017] 1. The cooling water enters the ring pipe through the water inlet pipe, and the guide pipe transports the cooling water to each ring pipe, forming a low-temperature area in the casing with a large coverage area, which effectively reduces the temperature inside the casing. The cooling water after heat exchange is discharged from the drain pipe, and the new cooling water is then sent into the pipeline assembly to achieve circulating cooling with good cooling effect, avoiding overheating of the motor and affecting its normal operation.

[0018] 2. The casing and the front cover and rear cover are detachable, which is convenient for inspecting the motor components and pipeline components inside the casing and improves convenience. During assembly, the positioning protrusions are aligned with the positioning recesses to achieve rapid docking of the front cover, rear cover and casing, reducing the difficulty of assembly. After the fixing screws and nuts are installed, the nuts at both ends prevent the front cover and rear cover from freely detaching from the casing. There will be no relative rotation between the front cover and the casing, and between the rear cover and the casing, thus ensuring the overall assembly stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic structural diagram of an AC motor for a drainage pump according to the present invention;

[0021] Figure 2 for Figure 1 The main view;

[0022] Figure 3 This is a structural diagram of the docking of the housing, front cover, and rear cover in the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the connection between the housing and the pipeline assembly in the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the pipeline assembly in the utility model.

[0025] In the figure: 1- housing; 2- front end cover; 3- rear end cover; 4- motor shaft; 5- pipe assembly; 6- annular pipe; 7- water inlet pipe; 8- drain pipe; 9- guide pipe; 10- heat dissipation groove; 11- first heat dissipation hole; 12- second heat dissipation hole; 13- L-shaped pressing block; 14- mounting portion; 15- first ear block; 16- second ear block; 17- fixing screw; 18- nut; 19- positioning protrusion; 20- positioning recess; 21- fixing bracket; 22- mounting hole. DETAILED DESCRIPTION

[0026] like Figures 1 to 5 As shown, the AC motor for a drainage pump of the present invention includes: a casing 1, a front cover 2 and a rear cover 3. The front cover 2 and the rear cover 3 are respectively arranged at both ends of the casing 1. A stator and a rotor are arranged in the casing 1. A coil is wound on the stator. The stator rotates and is connected to the rotor. A motor shaft 4 is provided on the rotor. The motor shaft 4 passes through the front cover 2 and is connected to the drainage pump. The above structure belongs to the prior art and will not be repeated here.

[0027] A piping assembly 5 is provided in the casing 1, in which cooling water flows. The piping assembly 5 includes a ring pipe 6, a water inlet pipe 7, a drain pipe 8 and a guide pipe 9. The ring pipe 6 is fixed on the inner wall of the casing 1, and the guide pipe 9 is provided between two adjacent ring pipes 6. The ring pipes 6 are connected into one, and the structure is stable. The water inlet pipe 7 is connected to one ring pipe 6, and the drain pipe 8 is connected to one ring pipe 6. The water inlet pipe 7 passes through the casing 1 upward, and the drain pipe 8 passes through the casing 1 downward.

[0028] The cooling water enters the ring pipe 6 through the water inlet pipe 7, and the guide pipe 9 transports the cooling water to each ring pipe 6, forming a low-temperature area in the casing 1 with a large coverage area, which effectively reduces the temperature in the casing 1. The cooling water after heat exchange is discharged from the drain pipe 8, and the new cooling water is then sent to the pipeline assembly 5 to achieve circulating cooling with a good cooling effect, avoiding overheating of the motor and affecting its normal operation.

[0029] Heat dissipation grooves 10 are evenly distributed on the outer wall of the casing 1, which increases the area of ​​air circulation inside and outside the casing 1. The radial air circulation effectively takes away the heat inside the casing 1 and improves the heat dissipation efficiency.

[0030] The front cover 2 is evenly distributed with first heat dissipation holes 11, and the rear cover 3 is evenly distributed with second heat dissipation holes 12, which increases the area of ​​internal and external air circulation. The axial air circulation effectively takes away the heat inside the casing 1, with high heat dissipation efficiency and good heat dissipation effect.

[0031] L-shaped clamps 13 are symmetrically distributed on the inner wall of the housing 1. These clamps press the annular tube 6 against the inner wall of the housing 1, restricting the free movement of the pipe assembly 5 and improving the stability of the installation of the pipe assembly 5. This makes the installation simple and reliable. L-shaped clamps 13 are provided with mounting portions 14, which are fixed to the housing 1 via screws, ensuring reliable fixation and easy assembly and disassembly, allowing for flexible and convenient installation and use.

[0032] A first lug 15 is provided on the front cover 2, and a second lug 16 is provided on the rear cover 3. A fixing screw 17 is passed between the second lug 16 and the first lug 15, and nuts 18 are connected to both ends of the fixing screw 17. The nuts 18 at both ends prevent the front cover 2 and the rear cover 3 from freely separating from the housing 1, thereby achieving detachable separation of the housing 1 from the front cover 2 and the rear cover 3, facilitating maintenance of the motor components and the piping assembly 5 inside the housing 1 and improving convenience.

[0033] Both the front end cover 2 and the rear end cover 3 are provided with positioning protrusions 19, and both ends of the casing 1 are provided with positioning recessed holes 20 corresponding to the positioning protrusions 19, so that the front end cover 2, the rear end cover 3 and the casing 1 can be quickly connected, which reduces the difficulty of assembly. After the fixing screw 17 and the nut 18 are installed, there will be no relative rotation between the front end cover 2 and the casing 1, and between the rear end cover 3 and the casing 1, thereby ensuring the overall assembly stability.

[0034] The bottom of the housing 1 is symmetrically provided with fixing brackets 21, which provide overall support and stability. The fixing brackets 21 are provided with mounting holes 22, which are screwed into the mounting holes 22 to fix the entire housing to the bottom plate or bottom bracket, improving the convenience of installation.

[0035] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. AC motor for drainage pump, including: A housing, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively arranged at two ends of the housing; Its characteristics are: A pipe assembly is provided in the casing, and cooling water flows in the pipe assembly. The pipe assembly includes a ring pipe, a water inlet pipe, a drain pipe, and a guide pipe. The ring pipe is fixed to the inner wall of the casing, and the guide pipe is provided between two adjacent ring pipes. The water inlet pipe is connected to one of the ring pipes, and the drain pipe is connected to one of the ring pipes. The water inlet pipe and the drain pipe both pass through the casing. The front end cover is evenly distributed with first heat dissipation holes, and the rear end cover is evenly distributed with second heat dissipation holes.

2. The AC motor for a drainage pump according to claim 1, characterized in that: L-shaped pressing blocks are distributed circumferentially on the inner wall of the housing, and the L-shaped pressing blocks press the annular tube against the inner wall of the housing.

3. The AC motor for a drainage pump according to claim 2, characterized in that: The L-shaped pressing block is provided with a mounting portion, and the mounting portion is connected and fixed to the housing by screws.

4. The AC motor for a drainage pump according to claim 1, characterized in that: A fixing screw is provided between the front end cover and the rear end cover. Both ends of the fixing screw are connected with nuts, which prevent the front end cover and the rear end cover from freely detaching from the casing.

5. The AC motor for a drainage pump according to claim 4, characterized in that: The front end cover and the rear end cover are both provided with positioning protrusions, and both ends of the housing are both provided with positioning recessed holes corresponding to the positioning protrusions.

6. The AC motor for a drainage pump according to claim 1, characterized in that: Heat dissipation grooves are evenly distributed on the casing.

7. The AC motor for a drainage pump according to claim 1, characterized in that: The bottom of the housing is symmetrically provided with fixing brackets, and the fixing brackets are provided with mounting holes.

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